[英]A string in PHP that doesn't make sense
我正在試驗PHP的弱/動態類型屬性以准備測試,並且完全被這個字符串連接的輸出所困惑。 有人可以解釋這是怎么可能的嗎?
<?php echo 1 . "/n" . '1' + 1 ?><br />
輸出:
2
分析:
echo 1 . "/n" . '1' + 1;
相當於
//joined first 3 items as string
echo "1/n1"+1;
相當於
//php faces '+' operator, it parses '1/n1' as number
//it stops parsing at '/n' because a number doesn't
//contain this character
echo "1"+1;
相當於
echo 1+1;
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.